Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Schedule of Fair Value of Assumptions (Details)

v3.20.1
Stockholders' Equity - Schedule of Fair Value of Assumptions (Details) - Warrants [Member]
9 Months Ended
Jan. 31, 2020
$ / shares
Expected volatility, minimum 46.00%
Expected volatility, maximum 74.00%
Stock price on date of grant $ 1.14
Exercise price $ 1.14
Expected dividends
Risk-free rate, minimum 1.77%
Risk-free rate, maximum 2.11%
Expected forfeiture rate 0.00%
Minimum [Member]  
Expected term (in years) 6 months
Maximum [Member]  
Expected term (in years) 5 years